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U.S. regulatory requirements for positive train control systems / / Mark Hartong, Duminda Wijesekera --
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2012
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1
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Your entry U.S. relations with Poland would be here
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U.S. Schools and the New Standards and Accountability Initiative / / Walter F. Heinecke /Daniel E. Curry-Corcoran /Tonya R. Moon --Ch. 2
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2003
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1
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